Oxygen reduction for the best possible root protection
The quality of the weld seam backing is significantly influenced by the residual oxygen content in the forming chamber. The lower the oxygen content, the better, more even and more robust the welded joint will be. The weld pool is also "calmer" during the welding process, which indicates optimum conditions. The ASS®-Prime forming system sets new standards in this area and enables a drastic reduction of the residual oxygen content to a value of around 5ppm.
Advantages of residual oxygen reduction:
Improved welding pattern:
Low residual oxygen values result in a smoother, more even and non-porous weld seam.
Higher weld seam quality:
The minimised oxygen content during welding reduces the formation of annealing colours, increases protection against oxidation and subsequently the strength of the welded joint.
Improved welding properties:
A low oxygen content improves the controllability of the welding process and results in a more homogeneous weld seam.
Reduced risk of pores and cracks:
The reduced oxidation minimises the formation of pores and cracks in the weld seam and the materials to be welded, which increases the safety and reliability of the welded joint.
Low residual oxygen values result in a smoother, more even and non-porous weld seam.
Higher weld seam quality:
The minimised oxygen content during welding reduces the formation of annealing colours, increases protection against oxidation and subsequently the strength of the welded joint.
Improved welding properties:
A low oxygen content improves the controllability of the welding process and results in a more homogeneous weld seam.
Reduced risk of pores and cracks:
The reduced oxidation minimises the formation of pores and cracks in the weld seam and the materials to be welded, which increases the safety and reliability of the welded joint.
ASS®-Prime forming system - technology for the highest demands:
The ASS®-Prime forming system is based on an innovative technology that effectively displaces atmospheric oxygen from the forming chambers. The combination of shielding gas and protection in the area of the weld root ensures that the welding area is optimally shielded.
Measurement and documentation:
Residual oxygen measuring devices are used to check compliance with the desired residual oxygen values. These devices enable precise control and documentation of the residual oxygen in the moulding chamber.


Scientific findings:
Numerous scientific studies confirm the benefits of a low residual oxygen concentration during welding. For example, a study by RWTH Aachen University has shown that the tensile strength of weld seams can be increased by up to 10% when the residual oxygen content is reduced from 20 ppm to 5 ppm.